CN101626586A - System and method for preventing over-current damage in mobile phone tests - Google Patents
System and method for preventing over-current damage in mobile phone tests Download PDFInfo
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- CN101626586A CN101626586A CN200810302638A CN200810302638A CN101626586A CN 101626586 A CN101626586 A CN 101626586A CN 200810302638 A CN200810302638 A CN 200810302638A CN 200810302638 A CN200810302638 A CN 200810302638A CN 101626586 A CN101626586 A CN 101626586A
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Abstract
The invention provides a method for preventing over-current damage in mobile phone tests. The method comprises the following steps: providing a test fixture and a power supplier connected with the test fixture; connecting an over-current protection element in series between the positive electrodes of the test fixture and the power supplier; connecting the test fixture with a mobile phone to be tested, so as to test the mobile phone; automatically disconnecting the pathway from the power supplier to the test fixture by the over-current protection element when the current passing through the over-current protection element increases so sharply that the current is larger than or equal to the predetermined threshold. The invention further provides a system for preventing over-current damage in mobile phone tests. The invention can prevent the over-current generated in mobile phone tests from damaging the internal parts of the mobile phone to be tested.
Description
Technical field
The present invention relates to a kind of system and method that prevents over-current damage in the mobile phone test.
Background technology
In existing mobile phone test (as shown in Figure 1); on measurement jig, do not do the protection of overcurrent; cause when power supply unit provides voltage to mobile phone test; if something unexpected happened (operation, sudden outage or short circuit etc. improperly); just have big electric current process in power supply unit or the measurement jig, thereby damage the mobile phone inner body.
Summary of the invention
In view of above content, be necessary to provide a kind of system that prevents over-current damage in the mobile phone test, it can prevent the overcurrent that produces in the mobile phone test destruction to mobile phone inner body to be measured.
Also be necessary to provide a kind of method that prevents over-current damage in the mobile phone test, it can prevent the overcurrent that produces in the mobile phone test destruction to mobile phone inner body to be measured.
A kind of system that prevents over-current damage in the mobile phone test; this system comprises a measurement jig and the power supply unit that is attached thereto; described measurement jig connects mobile phone to be measured, is in series with an over-current protecting element between the positive pole of described measurement jig and the positive pole of power supply unit.
In the above-mentioned system that prevents over-current damage in the mobile phone test; when the current spikes by described over-current protecting element raises and during more than or equal to the threshold values set, described over-current protecting element cuts off the path of described power supply unit to described measurement jig automatically.
In the above-mentioned system that prevents over-current damage in the mobile phone test, described over-current protecting element is a resettable fuse.
In the above-mentioned system that prevents over-current damage in the mobile phone test, after the electric current by described over-current protecting element was less than the threshold values of setting, described over-current protecting element restored to the original state immediately and continues conducting.
A kind of method that prevents over-current damage in the mobile phone test, this method comprise the steps: to provide a measurement jig and the power supply unit that is attached thereto; Over-current protecting element of series connection between the positive pole of the positive pole of described measurement jig and power supply unit; Described measurement jig is linked to each other, to carry out mobile phone test with mobile phone to be measured.
In the above-mentioned method that prevents over-current damage in the mobile phone test; when the current spikes by described over-current protecting element raises and during more than or equal to the threshold values set, described over-current protecting element cuts off the path of described power supply unit to described measurement jig automatically.
In the above-mentioned method that prevents over-current damage in the mobile phone test, described over-current protecting element is a resettable fuse.
In the above-mentioned method that prevents over-current damage in the mobile phone test, after the electric current by described over-current protecting element was less than the threshold values of setting, described over-current protecting element restored to the original state immediately and continues conducting.
Compared to prior art, described a kind of system and method that prevents over-current damage in the mobile phone test can prevent the overcurrent that produces in the mobile phone test destruction to mobile phone inner body to be measured.
Description of drawings
Fig. 1 is the structural representation of existing mobile phone test system.
Fig. 2 is a kind of structural representation that prevents the system of over-current damage in the mobile phone test of the present invention.
Embodiment
As shown in Figure 2, be a kind of structural representation that prevents the system of over-current damage in the mobile phone test of the present invention.The present invention compares with the existing mobile phone test system shown in Fig. 1, over-current protecting element 3 of series connection between the positive pole of the positive pole of measurement jig 1 and power supply unit 2.Described measurement jig 1 links to each other with mobile phone (not shown) to be measured, to carry out mobile phone test.Described over-current protecting element 3 can be selected fuse for use; resettable fuse (Poly switch) preferably; because be 2000 (cycles) useful life of resettable fuse; it unlike fuse in case fusing back just need to change; resettable fuse can disconnect when overcurrent produces, and just often it just continues conducting when electric current recovers.In the present embodiment, described over-current protecting element 3 adopts resettable fuse, and in other embodiments, described over-current protecting element 3 also can adopt other current limiting element.
In the mobile phone test process, the electric current in the power supply unit 2 flows into measurement jig 1 by described over-current protecting element 3.When something unexpected happened (operation, sudden outage or short circuit etc. improperly); current spikes by described over-current protecting element 3 raises and during more than or equal to the threshold values set; the temperature of described over-current protecting element 3 will rise moment, impedance improves; thereby cut off the path of described power supply unit 2 automatically, cause in the utmost point short time (microsecond), reducing by the electric current of described over-current protecting element 3 to described measurement jig 1.Behind the threshold values of electric current less than setting by described over-current protecting element 3, described over-current protecting element 3 will restore to the original state immediately and continue conducting.
It should be noted that at last, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although the present invention is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement technical scheme of the present invention, and not break away from the spirit and scope of technical solution of the present invention.
Claims (10)
1. system that prevents over-current damage in the mobile phone test; this system comprises a measurement jig and the power supply unit that is attached thereto; described measurement jig connects mobile phone to be measured; it is characterized in that, be in series with an over-current protecting element between the positive pole of described measurement jig and the positive pole of power supply unit.
2. the system that prevents over-current damage in the mobile phone test as claimed in claim 1; it is characterized in that; when the current spikes by described over-current protecting element raises and during more than or equal to the threshold values set, described over-current protecting element cuts off the path of described power supply unit to described measurement jig automatically.
3. the system that prevents over-current damage in the mobile phone test as claimed in claim 1 is characterized in that described over-current protecting element is a fuse.
4. the system that prevents over-current damage in the mobile phone test as claimed in claim 1 is characterized in that described over-current protecting element is a resettable fuse.
5. the system that prevents over-current damage in the mobile phone test as claimed in claim 4; it is characterized in that; when the current spikes by described over-current protecting element raises and during more than or equal to the threshold values set; described over-current protecting element cuts off the path of described power supply unit to described measurement jig automatically; behind the threshold values of electric current less than setting by described over-current protecting element, described over-current protecting element restores to the original state immediately and continues conducting.
6. a method that prevents over-current damage in the mobile phone test is characterized in that, this method comprises the steps:
The power supply unit that a measurement jig is provided and is attached thereto;
Over-current protecting element of series connection between the positive pole of the positive pole of described measurement jig and power supply unit; And
Described measurement jig is linked to each other, to carry out mobile phone test with mobile phone to be measured.
7. the method that prevents over-current damage in the mobile phone test as claimed in claim 6; it is characterized in that; when the current spikes by described over-current protecting element raises and during more than or equal to the threshold values set, described over-current protecting element cuts off the path of described power supply unit to described measurement jig automatically.
8. the method that prevents over-current damage in the mobile phone test as claimed in claim 6 is characterized in that described over-current protecting element is a fuse.
9. the method that prevents over-current damage in the mobile phone test as claimed in claim 6 is characterized in that described over-current protecting element is a resettable fuse.
10. the method that prevents over-current damage in the mobile phone test as claimed in claim 9; it is characterized in that; when the current spikes by described over-current protecting element raises and during more than or equal to the threshold values set; described over-current protecting element cuts off the path of described power supply unit to described measurement jig automatically; behind the threshold values of electric current less than setting by described over-current protecting element, described over-current protecting element restores to the original state immediately and continues conducting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810302638A CN101626586A (en) | 2008-07-08 | 2008-07-08 | System and method for preventing over-current damage in mobile phone tests |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810302638A CN101626586A (en) | 2008-07-08 | 2008-07-08 | System and method for preventing over-current damage in mobile phone tests |
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| Publication Number | Publication Date |
|---|---|
| CN101626586A true CN101626586A (en) | 2010-01-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810302638A Pending CN101626586A (en) | 2008-07-08 | 2008-07-08 | System and method for preventing over-current damage in mobile phone tests |
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| CN (1) | CN101626586A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102681960A (en) * | 2011-03-09 | 2012-09-19 | 研祥智能科技股份有限公司 | Serial communication port circuit and computer |
-
2008
- 2008-07-08 CN CN200810302638A patent/CN101626586A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102681960A (en) * | 2011-03-09 | 2012-09-19 | 研祥智能科技股份有限公司 | Serial communication port circuit and computer |
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Application publication date: 20100113 |